Regaining British Citizenship

[UTMatt]

BACKGROUND

Brought up in Northern Ireland, so am both British and Irish.

Wanting to bring non-EU spouse to live in NI but impossible due to financial requirement.

Have been advised by the Citizens Advice Bureau that a possible way to do this would be to renounce British Citizenship and bring spouse to NI by exercising EU rights as an Irish-only Citizen living in the UK, then spouse would be entitled to an EEA Family Permit visa.

QUESTION

If I were to renounce British Citizenship as advised, would I later be able to regain that British Citizenship as an Irish person living in the UK, having satisfied the 5 years residency requirements? Or would I forever be blocked from regaining British Citizenship because I once had it and renounced it?

Thanks for the advice.

[Casa]

"You have a separate right (once only) to be registered as a British citizen if you renounced
citizenship of the United Kingdom and Colonies:
• in order to keep or acquire the citizenship of a Commonwealth country, or
• because you had reasonable cause to believe that you would be deprived of
your citizenship of a Commonwealth country if you did not renounce.
5
If you renounced citizenship for any other reason, or if you have already renounced and
resumed British citizenship (as a right), registration is at the discretion of the Home Secretary.
(Registration will be granted if he or she thinks fit)"

https://assets.publishing.service.gov.u ... r_2015.pdf

Discretion may not be in your favour if your reason to renounce British citizenship was purely to get around (circumvent) the Immigration Rules for dual Irish/British nationals.